Stool Health · 8 min read
Black Stool: Harmless Causes vs. Warning Signs
Iron, bismuth and dark foods can turn poop black, but bleeding can too. Learn which clues matter, when to seek urgent care and what to tell your doctor.
AI-powered gut health tracker
Understand your gut health with an AI poop tracker
Take a photo and PooIQ scores your stool on 6 health metrics: shape, consistency, color, size, moisture and fiber. Track patterns, spot food triggers and bring a clear report to your doctor.
4.3 on the App Store · 56 ratings
Trusted by 10,000+ people on their gut health journey
Free to download · Available on iPhone & iPad
- health metrics scored per scan
- 6
- health metrics scored per scan
- languages supported
- 9
- languages supported
- of your records stay on your device
- 100%
- of your records stay on your device
- App Store rating
- 4.3★
- App Store rating
How PooIQ works
Logging a bowel movement takes less time than washing your hands.
- 1
Snap or log
Take a quick photo, choose one from your gallery, or record your bowel movement manually in a few taps.
- 2
Get your AI analysis
Our AI scores shape, consistency, color, size, moisture and fiber, maps the result to the Bristol Stool Scale and gives you an overall gut score from 0 to 100.
- 3
Track and spot triggers
Log food and symptoms, then watch trends, streaks and correlations build up over days and weeks.
Everything you need to track your gut health
PooIQ turns an awkward daily habit into clear, useful insights.
AI stool analysis
One photo, six health metrics and a 0–100 gut score, mapped to the Bristol Stool Scale in seconds.
Food & symptom triggers
See which foods and symptoms line up with good or bad days, so you can stop guessing what upsets your stomach.
Doctor-ready PDF reports
Export your bowel history, score trends and flagged observations as a PDF or CSV to share with your healthcare provider.
Bowel health calendar
A color-coded calendar shows healthy streaks and concerning patterns at a glance, with a daily streak counter to keep you consistent.
Personalized health modes
Tailor insights for IBS, Crohn's disease, ulcerative colitis, celiac disease or general wellness.
Private by design
Photos are analyzed securely and never stored on our servers. Your records live in a database on your device, and a blur toggle hides images in one tap.
See PooIQ in action
A calm, simple app built for real people tracking real symptoms.
The Bristol Stool Chart, built in
Doctors use the 7 Bristol stool types to describe bowel movements. PooIQ classifies every scan for you automatically.
- Type 1Constipation
Separate hard lumps
Hard, nut-like pieces that are difficult to pass. A sign of severe constipation and slow transit.
- Type 2Constipation
Lumpy and sausage-shaped
A sausage shape made of lumps stuck together. Usually a sign of mild constipation.
- Type 3Ideal
Sausage with cracks
Sausage-shaped with cracks on the surface. Generally considered normal.
- Type 4Ideal
Smooth and soft sausage
Smooth, soft and snake-like. Often considered the ideal stool that passes easily.
- Type 5Diarrhea
Soft blobs
Soft blobs with clear-cut edges that pass easily. Can mean a lack of fiber.
- Type 6Diarrhea
Mushy and fluffy
Fluffy pieces with ragged edges and a mushy consistency. A sign of mild diarrhea.
- Type 7Diarrhea
Watery
Entirely liquid with no solid pieces. A sign of diarrhea – stay hydrated.
Built for every gut health journey
Whether you are managing a condition or simply curious, PooIQ adapts to you.
IBS
Track flare-ups, link them to foods and stress, and find your personal triggers.
Crohn's & colitis
Keep a consistent log between appointments and spot changes early.
Celiac disease
See how your gut responds as you adjust your diet over time.
Constipation & diarrhea
Understand frequency and consistency, and see what actually helps.
Doctor visits
Replace vague memories with a clear report of dates, types and trends.
Everyday wellness
Build healthy habits with fiber insights, Apple Health water and fiber data, and streaks.
Your gut health data stays yours
We know this is personal. PooIQ was designed so you stay in control.
- Photos are analyzed securely in real time and are never stored on our servers or used to train AI models.
- Your logs and results are saved locally on your device.
- Nothing is shared unless you choose to export or share a report.
Latest from the blog
Clear, practical guides on stool health, digestion and gut-friendly habits.
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Green Poop: 7 Common Causes and When to Call a Doctor
Green poop often has a simple explanation. Learn how foods, supplements, and faster digestion affect stool color—and when symptoms deserve a doctor's attention.
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IBS Symptom Tracker: How to Log and Find Your Triggers
A useful IBS diary records more than meals and bathroom trips. Learn what to log, how long to track, and how to turn possible patterns into better questions for your doctor.
Frequently asked questions
What is PooIQ?
PooIQ is an AI-powered poop tracker and stool analyzer for iPhone and iPad. Take or upload a photo and the app scores your stool on six metrics – shape, consistency, color, size, moisture and fiber – and helps you track patterns over time.
How does the AI stool analysis work?
The AI looks at the visual appearance of your sample, classifies it on the Bristol Stool Scale and scores six health metrics. Over time PooIQ combines these results with the foods and symptoms you log to surface trends and possible triggers.
Is my data private?
Yes. Photos are sent securely for analysis and are not stored on our servers or used to train AI models. Your logs and results are stored locally on your device and are only shared if you choose to export them.
Can PooIQ diagnose a medical condition?
No. PooIQ is for informational and educational purposes only and is not a medical device. It does not diagnose or treat any condition. If you have concerns, please talk to a healthcare professional.
Can I share my results with my doctor?
Yes. PooIQ can generate a doctor-ready PDF report with your patterns, scores and flagged observations, or export your data as CSV.
Is PooIQ free?
PooIQ is free to download and includes a free analysis so you can try it. Unlimited AI analysis is available through a subscription or one-time scan credit packs.
Which languages does PooIQ support?
PooIQ is available in English, Finnish, German, Simplified Chinese, Indonesian, Portuguese, French, Spanish and Norwegian.
Start understanding your gut today
Join thousands of people who track their gut health with PooIQ. Your first analysis is free.
